Greetings, Could someone help me identify which model Longines I have? It appears to be from the 1980s, quartz movement. I've seen a similar model in a catalogue from that era, which was sold as the "Conquest", even though "Conquest" did not appear on the dial. The back has the serial number 19507819 and is marked "stainless steel". The strap appears to be original but has no identifying Longines marking. Thanks in advance!
Try sending an email to the Longines heritage department. I was pleasantly surprised when they sent me a response within 24 hours the last time I contacted them. Best of luck.